The following set of 3 biographies of European explorers is a great way to teach students about the contributions and impact of important people on the history of the United States.
There are many ways to implement including: read to self/independent reading work, read to someone activity, group work including carousel or jigsaw activity, supplemental reading for SS unit and more.
Biographies included with corresponding lexile levels:
Christopher Columbus - lexile 790
Giovanni da Verrazano - lexile 800
Sir Walter Raleigh - lexile 810